US Bridges

Portal Wy over Dakota CR

Fair

Whatcom County, Washington · 00.3 NW Hall Rd. · Structure no. 080776000000000

Built
1928
97 years old, rebuilt 2015
Condition
Fair
inspected March 2023
Type
Tee Beam
Concrete
Length
335 ft
7 main spans
Daily traffic
1,149
2023 count
Owner
County
County Highway Agency

About this bridge

Portal Wy over Dakota CR is a concrete tee beam carrying Portal Wy over Dakota CR in Whatcom County, Washington. It was built in 1928 and reconstructed in 2015, so it is 97 years old, older than the Washington average of 49.8 years.

The most recent inspection reported to the Federal Highway Administration rates it in fair condition with a lowest component rating of 5 out of 9. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

It carries about 1,149 vehicles a day, roughly 7% of them trucks, projected to reach 1,500 by 2045. The structure is 335 ft (102.1 m) long and 31 ft wide. If it were closed, the detour would be 1.9 mi (3 km).

Location

Open in Google Maps
CarriesPortal Wy
CrossesDakota CR
Location00.3 NW Hall Rd.
RouteCounty Highway 30410
CountyWhatcom County
StateWashington
Coordinates48.97172, -122.72238
Functional classRural Minor Collector

Condition and inspection

Fair

The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound.

ComponentRatingMeaning
Deck6 SatisfactoryStructural elements show some minor deterioration.
Superstructure5 FairAll primary structural elements are sound but may have minor section loss, cracking, spalling or scour.
Substructure6 SatisfactoryStructural elements show some minor deterioration.
Channel and channel protection8 Very GoodNo problems noted.
Last inspectionMarch 2023
Inspection intervalevery 24 months
Operating statusOpen, no restriction
ScourFoundations stable; scour within limits of footing or piles
Structural evaluation5: Somewhat better than minimum adequacy to tolerate being left in place as is
Deck geometry4: Meets minimum tolerable limits to be left in place as is
Waterway adequacy8: Equal to present desirable criteria
Approach roadway alignment8: Equal to present desirable criteria
Operating rating33.2 US tons
Inventory rating25.7 US tons

Structure

Structure typeTee Beam
MaterialConcrete
DeckConcrete, cast-in-place
Main spans7
Design loadH 20
Structure length335 ft (102.1 m)
Longest span50 ft (15.2 m)
Deck width31 ft (9.6 m)
Roadway width25 ft (7.5 m)
Vertical clearance over deckUnrestricted

Traffic and service

Average daily traffic1,149 (2023)
Projected traffic1,500 by 2045
Trucks7%
Lanes on structure2
Traffic directionTwo-way traffic
CarriesHighway and pedestrian
CrossesWaterway
Detour if closed1.9 mi (3 km)
TollOn a free road
National Highway SystemNo

Ownership and planned work

OwnerCounty Highway Agency
Maintained byCounty Highway Agency
Historic statusNot eligible for the National Register of Historic Places
Work proposedRehabilitation because of general structure deterioration or inadequate strength
Estimated improvement cost$5.9 million (2022 estimate)
NavigationNo navigation control on waterway

Frequently asked questions

When was Portal Wy over Dakota CR built?

It was built in 1928, making it 97 years old in 2025. It was reconstructed in 2015.

What condition is Portal Wy over Dakota CR in?

The National Bridge Inventory rates it in fair condition. The lowest-rated primary component is rated 5 or 6. Minor deterioration is present but the structure is sound. The last reported inspection was in March 2023.

How much traffic does Portal Wy over Dakota CR carry?

About 1,149 vehicles per day (2023 count), of which roughly 7% are trucks.

How long is Portal Wy over Dakota CR?

The structure is 335 ft (102.1 m) long with a longest span of 50 ft (15.2 m) and a deck 31 ft wide.

Who owns Portal Wy over Dakota CR?

It is owned by the County Highway Agency.